He recently paid cash for a farm to help his eldest son (the doctor) and his family build a family compound, complete with grass airstrip to land the family plane.

Although, it probably should given the compounding factor you had mentioned. 

@Alec McGinn student loans are typically at a pretty good rate so it doesn’t make a lot of sense to spend years that you could be compounding $ trying to pay it off. do both. one thing you should NEVER do is defer payment. know too many folks who have tried that and have been burned.

The top plates for the wall was so bowed and bent that it looks like the wood is smiling.

He subdivided the lot and built a compound and a giant ADU (biggest that I have ever seen) on one lot. 

I was definitely thinking about how to position it both ways: a mini compound for large groups and quaint individual spaces with shared outdoor space, so I’m glad Airbnb allows you to sync calendars on something like that.

The compounding effect is pretty amazing (if you put in 3k per year with a 10% return, you'll have $6.7M by age 67 - that's 55 years of savings and contributions).  

My vision is a compound of 4 smaller dwellings with a central area for community and some shared access to laundry/patio/storage to keep costs down.

Take my home city for example, Winnipeg, MB, has had a 6% appreciation rate per year over the last 19 years (compounded annually).

The building has been tested for asbestos, and it was found to exist in the joint compound, not in the drywall itself.